Detection of mechanical damage using microphone & DSP

Status
Not open for further replies.

pwok

Newbie level 3
Joined
Nov 1, 2013
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Visit site
Activity points
21
Hello,
I'm looking for information about "How to detect mechanical damage using microphone". I know, that the Professional devices uses ultrasound sensors but I think that simple microphone and DSP can do this too.

First We need an audio signal, amplitude, FFT of well working machine. When We measure in real time, We can subtract this old signal from new one. I think it could work with engines. But what do You think about suspension. Different textures of road, roughness, bumps. Is it posiible?

Thanks for answers.
 

what about the precision? 'ordinary' audio signals has long wavelength... so I think, in my opinion, it cannot detect small c-r-ac-k [why this word censored by **** anyway?] and textures. But maybe it works on large objects. CMIIW
 

Status
Not open for further replies.

Similar threads

Cookies are required to use this site. You must accept them to continue using the site. Learn more…